[java] Forum Topics

Can anyone help me out i want to learn to become a software developer, i need to know how to get started.

so i am trying to learn java on my own as a hobby, because well i didn't see my self doing this for a living, and i did terrible in the class, so i am going over the text book again, and starting from scratch. i am not sure if …

Hi there, I have this long Q and I must solve it to get bouns or i will fail :( Develop a statistical program to compute the famous statistics. First, create a text file, data.txt, contains several observations. Then write a java program that displays the following menu: Main Menu …

I have a java project, which runs fine on eclipse. Right now, I need to run it from command prompt, like java classpath ... How to setup this classpath based on the stored ones using in Eclipse.

Hi, I am using eclipse and Netbeans 7 whit Java JDK 1.6 i am wondering how do i add java extensions. I want to add Appache libary : org.commons.apache.2.4.jar to my java because their libary offers a lot of good extensions such as coutnMatches method.

Hi, I have a jFrame with a couple of jLabels, designed in Netbeans so most of the code is generated. If I want to change the text of the label, I use .setText() inside my jFrame and it works great. Now here's the problem. If I just make a String …

I need to run a javascript page from my app and receive the page that results from the script on a String. This is my code: [code=java] try { URL testurl = new URL("http://www.site.com/page.html"); try { String s=testurl.getContent().toString(); System.out.println(s); } catch (IOException ex) { Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex); } } catch …

I have URL like this: [code]http://www.site.com/app/index.html#secret_code=gagh362%%23atg._f46&other=5449[/code] I need to pass gagh362%%23atg._f46 part to a string. All the examples i find are for simple PHP parameter parsing and i'm having difficulties to adapt them to this case. Can someone help?

i am developing a BE final year project on Video Conferencing from Java with both unicasting and multicasting. I found there are some protocols such as SIP to implement it. are there any better and efficient way to implement it?

The result for the code below is "ex [6, 7, b, d] [6, 7, b]". Therefore I am wondering how did the exception take place and why is the value 3 missing? [CODE] import java.util.*; public class Exam6 { public static void main(String[] args){ TreeSet<String> t1 = new TreeSet<String>(); TreeSet<String> …

Could someone explain to me what it returns? int result2 = negative(-3); System.out.println("The final answer is " + result2); [B]public[/B] [B]int[/B] negative(int num){ [B]if[/B](num >= 20){ [B]return[/B] -5; }[B]else[/B]{ [B]return[/B] negative(num + 4) + 2 * num; } }

Hello guys, I am pretty new at (good) programming, so I had some pretty bad code I was using until I ran across some code and decided to model my code after it. I have the code so it has no errors, but when I run it (NetBeans) it doesn't …

Hello all, I have a window with a JList inside it. I would like each line in the JList to show up in a certain font. But when I try the 'setFont(font)' method where 'font' has already been defined it say that it cannot find the symbol 'setFont(java.awt.Font)'. Here is …

Hi, Can anyone tell me why this program is skipping line 63? Thank you, lynnajoe [CODE]import java.util.Scanner; //Imported Scanner for input import java.util.Locale; //Imported Locale and NumberFormat import java.text.NumberFormat; /**Simple Payroll Program titled PayrollPartI & modified for PayrollPart II * * @author Lynn Ortiz *///May 22, 2011 //Description of program: …

I have this file that contains an instance of some Machine object. When I compile the file I have, it says that the class uses a deprecated API, meaning the Machine object. I tried looking for it in [URL="http://download.oracle.com/javase/6/docs/api/"]this[/URL] link, but I find nothing. I was wondering if anyone who …

i just to know how can we implement the feature of live streaming in my blackberry aplication.. thanks in advance.

i need help please i cant input the name of pet in 2nd to the 5th it wont me input the name and skip into age. i dont get any error i just dont get it why it skp the name. public class PetRecordTESTER { public static void main(String [] …

I need to create a gui application.. When the user clicks the start button use a JFileChooser to allow them to pick a directory from the system and then run the recursive search of the file system from that directory and display the directory and each file in the JTextArea. …

I've tried searching my problem with no success...Can anyone help me fetch a password from the jpasswordField, encrypt it , store it to the database then decrypt back for login validation

Hello I'm wondering when it is best to use reflection to call a method instead of defining and using an interface. I guess using the interface will be faster but what are the advantages of using reflection? The program I'm creating is a GUI which should support mutliple views ([URL="http://en.wikipedia.org/wiki/Model–view–controller"]Model …

hi all I am new to web services.I want to know how to extract the java file from the given WSDL in which i have https based URI. please suggest

I WAS WONDERING IF SOMEONE COULD HELP ME MOVE THE JTextField above all my buttons like a normal calculator. Also, after this I don't know how to connect the basic calculations to operation buttons. When the user clicks a button the text appears in the textfield but I don't know …

Got some problem... This code populates an 2d array and then adds it to an arraylist (all) It runs 3 times and each time the array place gets different values. But if you look in arraylist all, the arrays got same value because they point to each other. If I …

i have a button and when it is clicked i want it to open a new form in netbeans. how do i do this...???

Hey guys, I am making a Java program where it runs on a library. This library classifies my program as a script. So basically, I am scripting. Now I want to make various scripts, but I want them all to have the same layout so that I can have the …

hey guys i have just started to learn java programming language ...i was wondering if i will be able run big java programs from command prompt...what the the advantages and disadvantages of using command prompt for running java programs...is using IDE like eclipse better than using command prompt?...if so in …

I have an existing Eclipse java project, and need to export it to the war file for deployment. By googling, it turns out that I need to covert it to a dynamic web project at first. But the menu item for this conversion is disabled. I would like to know …

My current work needs to do the development based on open soure software. There is a class defined as DirLocator.java The code is as follows [CODE]public final class DirLocator implements IResourceLocator { /** The folder relative to which resources are resolved. */ private File dir; /** * Initializes the locator …

[CODE]import javax.swing.*; import java.awt.*; import java.awt.event.ActionListener; import java.awt.event.ActionEvent; public class Absolute extends JFrame implements ActionListener //Error: Absolute is not abstract method actionPerformed(java.awt.event.ActionEvent) in java.awt.event.ActionListener { public JTextField textField1,textField2,textField3; public JLabel label1; String Operatn[] = {"Add","Mult","Divide","Sub"}; //Constructor public Absolute() { JFrame frame = new JFrame(); frame.setLayout(null); JLabel label1 = new JLabel …

Hello, After completing my application, my teacher told me I can't use serialization. I currently send objects using the writeObject / readObject methods. What's the easiest way of transitioning from this to something else? I'm thinking: [code=java] in = new BufferedReader(new InputStreamReader(socket.getInputStream())); out = new PrintWriter(new BufferedWriter( new OutputStreamWriter( socket.getOutputStream())),true); …